The standard account hosting package is 2 accounts regardless of whether it's a Lead (Copy from) or Follower (Send to) of a copier. With this package, you can create 1 copier with 1 Lead (Copy from) and 1 Follower (Send to) account.
It works the same way for each account hosting package. If you upgrade to the Plus account package, you could have 1 copier with 1 Lead (Copy from) and 4 Follower (Send to's) or 2 copiers with 2 Leads (Copy from's) and 3 Followers (Send to's). The account purpose doesn't matter.